ATMega chip full datasheet - UCSD Department of Physics

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ATmega48A/PA/88A/PA/168A/PA/328/PNotes: 1. In ATmega48A/PA/88A/PA/168A/PA/328/P, this parameter is characterized and not 100% tested.2. Required only for f SCL > 100kHz.3. C b = capacitance of one bus line in pF.4. f CK = CPU clock frequency5. This requirement applies to all ATmega48A/PA/88A/PA/168A/PA/328/P 2-wire Serial Interface operation. Other devices connectedto the 2-wire Serial Bus need only obey the general f SCL requirement.Figure 29-5.Two-wire Serial Bus Timingt oft rSCLt SU;STAt LOWt HIGHt LOWt HD;STA t HD;DAT tSU;DATt SU;STOt BUFSDA8271D–AVR–05/11328
ATmega48A/PA/88A/PA/168A/PA/328/P29.8 ADC CharacteristicsTable 29-16.ADC CharacteristicsSymbol Parameter Condition Min. Typ Max UnitsResolution 10 BitsAbsolute accuracy (IncludingINL, DNL, quantization error,gain and offset error)Integral Non-Linearity (INL)Differential Non-Linearity(DNL)Gain ErrorNote: 1. AV CC absolute min./max: 1.8V/5.5VV REF = 4V, V CC = 4V,ADC clock = 200kHzV REF = 4V, V CC = 4V,ADC clock = 1MHzV REF = 4V, V CC = 4V,ADC clock = 200kHzNoise Reduction ModeV REF = 4V, V CC = 4V,ADC clock = 1MHzNoise Reduction ModeV REF = 4V, V CC = 4V,ADC clock = 200kHzV REF = 4V, V CC = 4V,ADC clock = 200kHzV REF = 4V, V CC = 4V,ADC clock = 200kHz2 LSB4.5 LSB2 LSB4.5 LSB0.5 LSB0.25 LSB2 LSBVOffset ErrorREF = 4V, V CC = 4V,2 LSBADC clock = 200kHzConversion Time Free Running Conversion 13 260 µsClock Frequency 50 1000 kHzAV CC(1)Analog Supply Voltage V CC - 0.3 V CC + 0.3 VV REF Reference Voltage 1.0 AV CC VV IN Input Voltage GND V REF VInput Bandwidth 38.5 kHzV INT Internal Voltage Reference 1.0 1.1 1.2 VR REF Reference Input Resistance 32 kΩR AIN Analog Input Resistance 100 MΩ8271D–AVR–05/11329
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Features• High Performance, Low P
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Atmel Corporation2325 Orchard Parkw
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ATMega chip full datasheet - UCSD Department of Physics

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